the guide/wiki This will be updated if I find anything so I won't clobber up the readme.
A small guide here. which will link to a detailed wiki
A gpu script partially by AI, useful for blacklisting AMD or NVIDIA GPU's on a dual GPU machine for virtualization (AMD/NVidia).
simply clone this archive (or download this script), then make this script executable with sudo chmod +x; afterwards run sudo ./vfio-gen-aio.sh or sudo sh ./vfio-gen-aio.sh in your terminal of choice.
This is what you'll need:
- virt-manager
- qemu-full
- a rom for your GPU you can use a rom dumping utility or simply look on the internet check the newly created page on the wiki.
For trying to pass though Nvidia you'll need to apply this patch and install either of these kernels listed in this wiki if you use arch And for the sake of it, here's a video from Pavol Elsig which should be an easier guide also a level1tech guide here. There's a repo on ASC+PCI patching here however you'd have to rebuild the kernel apparently so if you do not wish to do so you may install liquorix instead if you'd like (fedora command is below).
for issues with the mouse/keyboard you'll need to use evdev, guide to do so is in inside the archwiki you may also use some of the qemu commands I've pointed out here. For issues with a stuck keyboard mouse input you may need the VFIO drivers; here's an ISO file for it.
- This script will ask you to blacklist either an AMD or NVIDIA drivers (GPUs)
- Will also ask if it wants you to create a vfio file (if you have the vfio-linux kernel or an a equivalent such as liquorix)
- Will ask you to input the values into your grub (pci.ids)
- Will ask you if you'd want to generate AMD/Intel Iommu configs
- Will ask you if you'd want to create GPU breakups with an ACS override patch (good for when groups are not grouped properly)
- Will ask you if you'd want to remove the blacklist/vfio on start, also will ask you if you want to revert grub.
- Will pull in other scripts for grub updates (or any bootloader you use) with grub-update and grub-backup shell scripts, will ask you to revert changes within grub revert; all customizable or at least easily customizable than compared to earlier; feel free to edit those files and the main vfio script should work for your disto.
This should help; keep in mind that it will suspend your host so you'll have to just click a keyboard button; you'll need to run this script as a super user (sudo) also be sure to edit the values for the PCI devices and you may use sudo sh when running this script.
#!/bin/bash
echo 1 > /sys/bus/pci/devices/0000:00:00.0/remove
echo 1 > /sys/bus/pci/devices/0000:00:00.1/remove
echo "Suspending..."
rtcwake -m no -s 4
systemctl suspend
sleep 5s
echo 1 > /sys/bus/pci/rescan
echo "Reset done"
you can view your GFX card with lspci and it should give you the PCI-E numbers such as 09:00.0 and 09:00.1 for an example.
You would have to generate your initial ramdisk environments: example for arch, which is what I'm using.
sudo mkinitcpio --allpresets
Be sure to check the man pages, or install tldr.
UPDATE: This is now inside the script; this will happen when it asks you if you'd like to delete the vfio file and you'd enter [y]es
Also be sure to have MODULES=(amdgpu) inside your /etc/mkinitcpio.conf for this to work.
You would need to install vim-common for this
#!/bin/bash
hexdump -ve '1/1 "%.2x"' ./qemu-system-x86_64 |
sed -e 's/424f4348/434f4348/g' -e 's/42585043/44585043/g' |
xxd -r -p > ./qemu-system-x86_64-pass
This would patch your qemu-system to not be easily found for gaming basically; otherwise you'd have to do it manually.
sudo dnf copr enable rmnscnce/kernel-lqx
sudo dnf in kernel-lqx
I have issues with SElinux with my NTFS drive, VM will not start and or it crashes, already set permissons and groups (fedora)
Use this to enable VM's on a NTFS drive (selinux)
setsebool virt_use_fusefs=on
and before you run this script be sure to enter this following command to update grub and reboot (virt-manager crash windows any)
You'll also need to set your processor to QEMU and clear the current processor config from copying the current host; then you may set it back after a windows install.
sudo grubby --update-kernel=ALL --args='kvm.ignore_msrs=1'
for Arch edit kvm.conf inside /etc/modprobe.d/. this is for BSOD inside windows host-passthough cpu modes:
options kvm ignore_msrs=1
If all else fails you'll probably have to either set seliunx to permissive or disabled it inside /etc/selinux/config
You can also set it wil grubby, that's inside the selinux config, will not cover here though.
sudo usermod -a -G libvirt $(whoami)
and be sure to add yourself to the qemu file like so in /etc/libvirt/qemu.conf
user = "1000"
# The group for QEMU processes run by the system instance. It can be
# specified in a similar way to user.
group = "kvm"
The following above was an example and a Userid of the current user, which is you; you can change it to something you'd want.
ntfs-3g default_permissons,allow_other,uid=1000,gid=1000,rw,umask=000 0 0
An example of a fstab drive; change it to what you will but it seems to work pretty well under fedora.
- inital startup
- CPU and other options
This will imply that you have dumped the ROM and loaded along with your PCI-e card UNDER FEDORA or possibly other Linux; remember mileage may vary.
- AMD+Ubuntu=supported on the latest release.
- AMD+Debian=Doesn't fully support AMD.
- AMD+arch=supported
- AMD+Fedora=Not supported
- AMD*Windows=Supported
- NVIDIA+Ubuntu=supported
- NVIDIA+Arch=supported
- NVIDIA+Debian=supported
- NVIDIA+Fedora=Supported
- NVIDIA+Windows=Supported